Gene Details:

• MSU gene ID: LOC_Os03g13274
• RAPdb gene ID: Os03g0235900
• Gene Symbol: NRT1 OsNRT1 OsNRT1.1
• Genome: MSU7 ,  IRGSP-1.0
• Species: Oryza sativa

Functional Descriptions:

• Northern-blot and in situ hybridization analysis indicated that OsNRT1 is constitutively expressed in the most external layer of the root, epidermis and root hair.
• As a first step toward that goal, we have cloned a nitrate transporter gene from rice called OsNRT1.
• OsNRT1 is a new member of a growing transporter family called PTR, which consists not only of nitrate transporters from higher plants that are homologs of the Arabidopsis CHL1 (AtNRT1) protein, but also peptide transporters from a wide variety of genera including animals, plants, fungi, and bacteria.
• However, despite the fact that OsNRT1 shares a higher degree of sequence identity with the two peptide transporters from plants (approximately 50%) than with the nitrate transporters (approximately 40%) of the PTR family, no peptide transport activity was observed when OsNRT1 was expressed in either Xenopus oocytes or yeast.
• Furthermore, contrasting the dual-affinity nitrate transport activity of CHL1, OsNRT1 displayed only low-affinity nitrate transport activity in Xenopus oocytes, with a K(m) value of approximately 9 mM.
• These data strongly indicate that OsNRT1 encodes a constitutive component of a low-affinity nitrate uptake system for rice.
• Cloning and functional characterization of a constitutively expressed nitrate transporter gene, OsNRT1, from rice.

Function-related keywords:

• root-hair ,  nitrate ,  transporter ,  root

Literature:

• Rice OsNAR2.1 interacts with OsNRT2.1, OsNRT2.2 and OsNRT2.3a nitrate transporters to provide uptake over high and low concentration ranges .  DOI:  10.1111/j.1365-3040.2011.02335.x ;  PMID:  21486304
• Cloning and functional characterization of a constitutively expressed nitrate transporter gene, OsNRT1, from rice .  DOI:  10.1104/pp.122.2.379 ;  PMID:  10677431
• Comparison of ion balance and nitrogen metabolism in old and young leaves of alkali-stressed rice plants .  DOI:  10.1371/journal.pone.0037817 ;  PMID:  22655071
• NRT1.1s in plants: functions beyond nitrate transport .  DOI:  10.1093/jxb/erz554 ;  PMID:  31832669
• Modulation of nitrate-induced phosphate response by the MYB transcription factor RLI1/HINGE1 in the nucleus .  DOI:  10.1016/j.molp.2020.12.005 ;  PMID:  33316467

Related News:

Gene Resources:

• NCBI ID: AF140606  , AK066920
• UniProt accessions:

Sequences: